Spouting characteristics of wet particles in a conical-cylindrical spouted bed

Huibin Xu, Wenqi Zhong, Aibing Yu, Zhulin Yuan

Research output: Contribution to journalArticleResearchpeer-review

26 Citations (Scopus)

Abstract

Spout characteristics, such as flow pattern, minimum spouting velocity, and maximum spoutable bed height, are investigated in a wet conical-cylindrical spouted bed. Water and glass beads (Geldart D type) are adopted as the liquid and solid phases, respectively. The evolution of flow pattern of a wet spouted bed is captured by a CCD camera. The experimental results indicate that the minimum spouting velocity decreases when increasing the liquid saturation. The increase of initial bed height, particle size, or spout nozzle size leads to increased minimum spouting velocities. A correlation is formulated based on the experiments results for the prediction of minimum spouting velocities of wet spouted beds. Moreover, it is found that the maximum spoutable bed height Hmax decreases as particle size or spout nozzle diameter increases. However, Hmax is almost constant, approximately 1.5 times higher than that of its corresponding dry spouted bed, when increasing the liquid saturation.
Original languageEnglish
Pages (from-to)9894 - 9902
Number of pages9
JournalIndustrial and Engineering Chemistry Research
Volume54
Issue number40
DOIs
Publication statusPublished - 2015

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